# CVE-2022-49551: usb: isp1760: Fix out-of-bounds array access

> An out-of-bounds read in the Linux kernel ISP1760 USB driver can cause a system crash, requiring a kernel patch to fix.

- **Severity:** High 7.1 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 26 Feb 2025
- **Updated:** 11 May 2026
- **Also known as:** DEBIAN-CVE-2022-49551, GHSA-w58q-m7pq-48p4, UBUNTU-CVE-2022-49551

## What is CVE-2022-49551?

CVE-2022-49551 is a high-severity memory corruption vulnerability in Linux kernel, published on 26 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the Linux kernel, the following vulnerability has been resolved:

usb: isp1760: Fix out-of-bounds array access

Running the driver through kasan gives an interesting splat:

  BUG: KASAN: global-out-of-bounds in isp1760_register+0x180/0x70c
  Read of size 20 at addr f1db2e64 by task swapper/0/1
  (...)
  isp1760_register from isp1760_plat_probe+0x1d8/0x220
  (...)

This happens because the loop reading the regmap fields for the
different ISP1760 variants look like this:

  for (i = 0; i < HC_FIELD_MAX; i++) { ... }

Meaning it expects the arrays to be at least HC_FIELD_MAX - 1 long.

However the arrays isp1760_hc_reg_fields[], isp1763_hc_reg_fields[],
isp1763_hc_volatile_ranges[] and isp1763_dc_volatile_ranges[] are
dynamically sized during compilation.

Fix this by putting an empty assignment to the [HC_FIELD_MAX]
and [DC_FIELD_MAX] array member at the end of each array.
This will make the array one member longer than it needs to be,
but avoids the risk of overwriting whatever is inside
[HC_FIELD_MAX - 1] and is simple and intuitive to read. Also
add comments explaining what is going on.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2022-49551?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2022-49551?

Apply the vendor's patch.

## Is CVE-2022-49551 being exploited?

There is no known exploitation of CVE-2022-49551 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-49551 and fix it if it is affected.

What it is: CVE-2022-49551 is a high-severity memory corruption vulnerability in Linux kernel, published on 26 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-49551 in the wild and no public exploit code.

Affected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2022-49551/ (Markdown: https://insights.sbomify.com/CVE-2022-49551/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-49551
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-49551
- OSV: https://osv.dev/vulnerability/CVE-2022-49551

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-49551/
Summaries are generated and may contain mistakes; the official description above is the record.